Regarding your 3 year old's ear discharge;this may mean that he has an ear infection. This is not due to wax.Your son should be seen by a doctor, preferably the ENT specialist who inserted the grommets in your son's ears.
It is true that a baby should not lie flat when drinking his bottle as it is not good for his ears.The milk may enter the eustachian tubes from the ears and cause an ear infection.
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